Twyer.



N0. 860,287. PATENTED JULY 16, 1907.

. J. F. PLEWWELLING.

TWYER.

APPLIOATION FILED APB-19, 1906.

I WITNESSES: v INVENTOR.

W g Janus i'z 'wwcCCci/rg' ATTORNEY- JAMES FRANCIS FLEWWELLING, OFKENTON, MANITOBA, CANADA.

TWYER.

Specification (5r Letters Patent.

Patented July 16, 1907.

Application filed April 19, 1906. Serial No. 312,722.

To all whom it may concern.-

Be it known that 1, JAMES FRANCIS FLEWWELLING, of Kenton, in theProvince of Manitoba, Canada, have invented certain new and usefulImprovements in Twyers, of which the following is a specification.

My object is to devise a twyer for forges which will give better controlof the blast and the fire than those ordinarily employed, and myinvention consists essentially of a twyer having its blast openingadjustable in length, and likewise longitudinally adjustable to bring itunder any desired part of the fire above, substantially as hereinaftermore specifically described, and then definitely claimed.

Figure l is a plan view of a forge provided with my improved twyer. Fig.2 is a longitudinal section of a twyer on a larger scale. Fig. 3 is across section at right anglesto Fig.2.

In the drawings like letters of reference indicate corresponding partsin the different figures.

Referring particularly to Fig. l, A represents a forge and B the casingof the twyer fitted into the bottom of i the forge in any ordinarymanner, the construction of the casing being better illustrated in Figs.2 and 3.

In the side of the twyer casing is formed the air inlet 0, in the. topof the casing a longitudinal blast opening D, and. in its bottom an ashopening, closed by the re movable slide E. Above the ash opening thecasing is preferably trough shaped, the bottom of the casing slopingdown on each side to the trough. Below the blast opening are located twosliding gates J longitudinally movable to restrict the said opening.These gates are preferably shaped to engage the guides F formed at eachside of the casing. Their lower edges may also engage the flat guides Gformed at each side of the casing.

The gates aremoved by means of a threaded rod H suitably engaging eachof the gates. The rod is preferably right and left hand threaded, asshown, in order that the gates may be moved simultaneously. The end ofthis rod extends outside the casing, and is preferably formed with acrank handle, as shown. As this rod is not connected in any way with thecasing it follows that not only may the gates be adjusted closertogether or further apart but that they may also be moved as a pair tobring the blast under any desired part of the fire above.

In order to prevent the fire dropping through I employ a longitudinalbar I, which passes through suitable slots formed in the sliding gates.This bar therefore effects its purpose without interl'cringwith the freemovement of the sliding gates.

The advantages of my device are many. I can with case obtain any desiredsize of blast opening, vastly increasing the convenience and usefulnessof the forge to which the twyer is applied. I am also enabled to bringthe blast opening under any desired part of the fire within the limitsof adjustment of the apparatus. This enables me to blow up any part ofthe fire I may desire, which is in itself a great advantage, evenindependent of the adjustment of the size of the opening. While most ofthe fire and ashes is held up by the bar I, any ashes and dust which mayfall through will be collected in the bottom of the casing, and may beremoved through the ash opening.

What I claim as my invention is:

1. A twyer for forges having an elongated blast opening; two slidinggates longitudinally movable to restrict said opening; and alongitudinal bar central of the openingadapted to prevent fuel droppingthrough the twyer, substantially as described.

2. A twyer for forges having an elongated blast openi112; two slidinggates longitudinally movable to restrict said opening; and alongitudinal bar on which the gates slide central of the opening. andadapted to prevent fuel dropping through the twyer, substantially asdescribed.

3. A twyer for forges having an elongated blast opening; two slidinggates longitudinally movable to restrict said opening; and a right andleft hand threaded rod suitably engaging said gates whereby they may beadjusted to and from one another or shifted as a unit, substantially asdescribed.

Kenton, Manitoba, March, 1906.

JAMES FRANCIS FLINVWELLING.

Signed in the presence of- M. B. JACKSON, CIIAS. OAKns.

